Tag: fish
(Un)sustainability in the Swiss fish market
Sustainability of fish as a food is a highly complex issue, especially in a global market with wildly varying measures and priorities in fish production and harvesting. Urs Baumgartner, environmental scientist, and Dr Elisabeth Bürgi Bonanomi, legal scientist and expert in sustainable trade regulation, tried to get a clearer picture of sustainability in the fish market of Switzerland, which imports […]
X-ray ptychography: Seeing chromosome abnormalities in a new light
Chromosome abnormalities have profound health consequences including trisomy and cancer. Karyotyping (the visualisation of the complete set of chromosomes by shape and size) is an initial step towards identification of chromosome aberrations and disease. Other chromosome imaging methods such as fluorescent in situ hybridisation (FISH) rely on sample preparation or fluorescent markers, which may or may not alter the sample. […]
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New ways to assess stress in fish are urgently needed in aquaculture
With an increasing demand in fish products, aquaculture is fast becoming a main priority towards achieving sustainable fish production. In this context, an accurate and consistent way to evaluate fish stress levels is essential to ensure high standards of welfare. Dr Pedro Miguel Rodrigues and Msc Cláudia Raposo de Magalhães, based at the University of Algarve, CCMAR, Portugal, believe current […]
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Fishes in the lower Congo River. An extreme case of species divergence and convergent evolution
In its lower reaches the Congo River is the world’s fastest and deepest river, and this short stretch hosts great biological diversity. Many fishes inhabiting the lower Congo River display adaptations to life in such an extreme environment, and often similar adaptations have arisen in fishes distant from each other on the tree of life. Professor Melanie Stiassny, along with […]